"Awards of the Russian Empire, Part 1: Orders and Badges of Distinction.
"Awards of the Russian Empire, Part 1: Orders and Badges of Distinction. Reference Catalog." C. 2005 St. Petersburg. Russian text. Soft cover, 52 pp, b/w illustrations. This is an attempt to classify Russian Imperial decorations by age and manufacturing variety. Perhaps the best feature of this book is the guide to market values. This makes it a convenient pocket guide for collectors.
Although it is not intended as anything like a comprehensive catalog of variations, most major types and styles are represented. Six pages are dedicated exclusively to copies, fakes and "upgrades". There is a separate 2-page article on relative rarity of awards and number of issues. Last two pages show manufacturers and markings.
Unfortunately, the illustrations are of such poor quality that they are of use only for general type identification. Otherwise this is a rather handy quick reference.